649277440

素因数分解:

$2^{12}\times 5^1\times 7^2\times {\mathrm{647}}^1$

素因数の和:690

約数の個数: 156

約数和(自身を含む): 1815256656

約数和(自身を除く): 1165979216

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 647, 784, 896, 980, 1024, 1120, 1280, 1294, 1568, 1792, 1960, 2048, 2240, 2560, 2588, 3136, 3235, 3584, 3920, 4096, 4480, 4529, 5120, 5176, 6272, 6470, 7168, 7840, 8960, 9058, 10240, 10352, 12544, 12940, 14336, 15680, 17920, 18116, 20480, 20704, 22645, 25088, 25880, 28672, 31360, 31703, 35840, 36232, 41408, 45290, 50176, 51760, 62720, 63406, 71680, 72464, 82816, 90580, 100352, 103520, 125440, 126812, 143360, 144928, 158515, 165632, 181160, 200704, 207040, 250880, 253624, 289856, 317030, 331264, 362320, 414080, 501760, 507248, 579712, 634060, 662528, 724640, 828160, 1003520, 1014496, 1159424, 1268120, 1325056, 1449280, 1656320, 2028992, 2318848, 2536240, 2650112, 2898560, 3312640, 4057984, 4637696, 5072480, 5797120, 6625280, 8115968, 9275392, 10144960, 11594240, 13250560, 16231936, 18550784, 20289920, 23188480, 32463872, 40579840, 46376960, 64927744, 81159680, 92753920, 129855488, 162319360, 324638720, 649277440]

約数ペア:

[(1, 649277440), (2, 324638720), (4, 162319360), (5, 129855488), (7, 92753920), (8, 81159680), (10, 64927744), (14, 46376960), (16, 40579840), (20, 32463872), (28, 23188480), (32, 20289920), (35, 18550784), (40, 16231936), (49, 13250560), (56, 11594240), (64, 10144960), (70, 9275392), (80, 8115968), (98, 6625280), (112, 5797120), (128, 5072480), (140, 4637696), (160, 4057984), (196, 3312640), (224, 2898560), (245, 2650112), (256, 2536240), (280, 2318848), (320, 2028992), (392, 1656320), (448, 1449280), (490, 1325056), (512, 1268120), (560, 1159424), (640, 1014496), (647, 1003520), (784, 828160), (896, 724640), (980, 662528), (1024, 634060), (1120, 579712), (1280, 507248), (1294, 501760), (1568, 414080), (1792, 362320), (1960, 331264), (2048, 317030), (2240, 289856), (2560, 253624), (2588, 250880), (3136, 207040), (3235, 200704), (3584, 181160), (3920, 165632), (4096, 158515), (4480, 144928), (4529, 143360), (5120, 126812), (5176, 125440), (6272, 103520), (6470, 100352), (7168, 90580), (7840, 82816), (8960, 72464), (9058, 71680), (10240, 63406), (10352, 62720), (12544, 51760), (12940, 50176), (14336, 45290), (15680, 41408), (17920, 36232), (18116, 35840), (20480, 31703), (20704, 31360), (22645, 28672), (25088, 25880)]